FI106821B - Electrical connection - Google Patents

Description

106821 Electric kk - Elektrisk koppling

The invention relates to electrical switches, and in particular to electrical switches for switching individual phases of a multi-phase electric current.

Common fuse switches, such as those in U.S. Patent 4,748,431, are well known. These switches provide means for simultaneously opening and closing the chipset. They are also known to actuate auxiliary switches.

The demands of industrial switches have resulted in complex switching mechanisms and associated assembly techniques. Industrial switches are used in the Anka-10 under conditions where they are exposed to severe shocks and vibrations. They must be extremely reliable, structurally durable and relatively inexpensive to manufacture. Furthermore, it is desirable that the switches clearly indicate the state of the outward connection.

The present invention relates to an electrical switch in which the electrical connections are made in a vertical plane. More specifically, the switch has a drive mechanism housing in which the drive mechanism is disposed. The lower connector housing is mounted vertically on the drive mechanism housing. At least one pair of fixed connectors is located in the lower connector housing. Each fixed connection has a tab extending vertically in the axial plane upwards to .... The upper connector housing is mounted vertically on the lower connector; · [the mesh housing and the conductive device is mounted vertically on the upper connector housing ”·” 20.

• · · ....: The conductive device has a pair of ears for the associated fixed connector lugs.

. ·. : The conductive device ears extend downward in a vertical axial plane through the top of the upper terminal box. The conductive device may have either a fuse holder or a short-circuit cup.

: 1 [1: 25 The axially movable connector holder is connected between the lower and upper connector housing. A pair of movable terminals are mounted on the terminal bracket in the vertical axis • · · .1. to attach to the lugs of the fixed connectors and to the lugs of the leading device. “·” And break away from them.

. 1 ·. The drive mechanism is housed in the drive mechanism housing for driving the axially movable terminal bracket 30. When the movable contacts are engaged, the switch allows electric current to flow from the interface side of the load-side terminal. When the movable connectors are disconnected, the electrical current of the switch cannot flow through the switch.

It is an object of the present invention to enable assembly of a coupling in a generally vertical manner and thereby facilitate assembly. The present invention achieves this object by designing a switch comprising: a drive mechanism housing; A lower connector housing secured in a vertical position on the drive mechanism housing by a first mounting means; a pair of fixed connectors housed within the lower connector housing, each having an upwardly extending axial plane lug; an upper connector housing mounted vertically on the lower connector housing by means of a second securing means; a conductive device mounted vertically on the top connector housing by a third attachment device, the conductive device comprising a pair of lugs extending downwardly in said vertical axial plane through the top of the upper connector housing; an axially movable connector holder between lower and upper connector housing; 15 pairs of movable connectors mounted on a vertical connector holder for attaching to jc.V standard device fixed connectors and replacements in said vertical axis. ' '': At the lower level; and; drive mechanism in the drive mechanism housing to axially displace the movable connector bracket axially, the movable connectors being attached to the lugs of the fixed connectors of the * * 20 mesh housing and the conductor in the top connector housing. * · In and out of the lugs of the device.

• · · • · * • · ·

Another object of the present invention is to design the switch such that it remains ... in size when shaken vigorously. Because the movable connectors are fixed; to the connectors and to the conductor device lugs in the vertical plane, the switch has * · 25 sufficient tolerance to withstand shaking errors.

«· · • · •«, ***; The auxiliary switch can be mounted on the switch using a mounting bracket. This invention. The mounting bracket of the present invention has at least one clip securing the bracket to the coupling.

:: The clamp has a cam that prevents the clamp from moving towards the auxiliary clamp mounts when the auxiliary clamp is attached to the rack. Therefore, the clamp remains attached to the coupling even if the coupling is shaken vigorously.

3, 106821

Another object of the present invention is to provide a clear external indication of whether the switch is "on" or "off" .This switch can accomplish this purpose by using an on / off detector, wherein the "on" indicator is in the part of the lower connector housing that is visible when the connector holder is in "-5" position and hidden when the connector holder is in "disconnected" position.

The above objects and advantages of the invention will be apparent from the following description. Reference is made to the accompanying drawings, which are parts thereof and in which the preferred embodiment of the invention is illustrated. Such an embodiment does not necessarily represent the full scope of the invention.

Fig. 1 is a perspective view of an assembled switch according to the present invention having an auxiliary switch and a mounting bracket in exploded view separate from the switch;

Fig. 2A is an exploded perspective view of the top of a switch in accordance with the present invention;

Fig. 2b is an exploded perspective view of the lower portion of the switch of the present invention;

Fig. 3 is a side view of the switch with the portions of the switch box cut away;

Fig. 4 is an end view of the switch with the portions of the switch housing cut away; • · ·: Figure 5 is another side view of this switch cutting off portions of the switch housing. ·. ·! fitted; ':; Fig. 6 is a sectional view of the actuator mechanism of the switch, taken from the plane 6-6 of Fig. 5; • · · • · · · ·

Fig. 7 is a view similar to Fig. 6, but with the drive mechanism's drive slide and drawbar ... removed; • · • · • · ·

Figure 8 is a detailed view showing portions of the drive mechanism shown in Figure 7; • · • · ·

Figure 9 is a sectional view taken along line 9-9 of Figure 8; ';;;' Figure 10 is a sectional view taken along line 10-10 of Figure 8; • ·

Fig. 11 is a top plan view showing a switch for a drive mechanism; 4, 106821

Fig. 12 is a side elevational view showing the switch of Fig. 11;

Fig. 13 is a vertical view of the switch of Fig. 11, taken along line 13-13 of Fig. 11;

Fig. 14 is a top plan view for the spring compression lever drive mechanism;

Fig. 15 is a sectional view of the spring compression lever of Fig. 14, taken along line 15-15 of Fig. 14;

Figure 16 is a bottom plan view showing the spring compression lever of Figure 14;

Fig. 17 is a top plan view of a spring guide for a drive mechanism;

Fig. 18 is a side elevational view of the spring guide of Fig. 17;

Figure 19 is a front elevational view of the spring guide of Figure 17; Figure 20 is a rear elevational view of the spring guide of Figure 17;

Fig. 21 is a view similar to Fig. 7, but showing an auxiliary clutch mechanism mounted at the front of the switch;

Figure 22 is a sectional view taken along line 22-22 of Figure 21;

Figure 23 is a front elevation view of the auxiliary actuator drive mechanism; •. Fig. 24 is a sectional view of the auxiliary cam shown in line 24-24 of Fig. 23; Fig. 25 is an auxiliary projection of the bottom planar pattern 23; • ·

Fig. 26 is a front elevational view showing the auxiliary switch mounting bracket for the switch: T: with a portion of the bracket cut away; Fig. 27 is a top plan view of the auxiliary switch mounting bracket of Fig. 26; Figure 28 is a rear plan view of the auxiliary switch mounting bracket of Figure 26; Fig. 29 is a sectional view taken on line 29-29 of Fig. 28; • ·

Fig. 30 is a top plan view of the lower connector housing of the switch with the connector holder visible with dotted lines;

Fig. 31 is a top plan view of a connector holder for a switch; 5 106821

Fig. 32 is a top view assembled of an upper connector housing, a lower connector housing, and a connector holder for an alternative embodiment of a switch according to the invention;

Fig. 33 is a top plan view of the connector bracket 5 used in the embodiment of Fig. 32;

Figure 34 is a top plan view of the lower connector housing shown in Figure 32;

Figure 35 is a bottom plan view of the connector housing shown in Figure 32;

Fig. 36 is a cross-sectional view of the assembly of Fig. 32, taken along line 36-36 of Fig. 32; and FIG. 37 is a cross-sectional view of the assembly of FIG. 32, taken along line 37-37 of FIG. 32.

The electrical switch 10 of the present invention is shown in Figure 1. The conductive parts of the electrical switch 10 are made of conductive metal (e.g., copper) and the other parts are generally made of molded heat-curing plastic. Some of the parts are made recognizable in this 15 description from other materials.

As shown in Fig. 1, the auxiliary switch 12 can be mounted to the electrical switch 10 by the auxiliary switch mounting bracket 14. The auxiliary switch mounting bracket 14 is flexible and is: made of molded heat-curing plastic.

* · * · 'Referring to Figures 2a and 2B, the electrical switch is assembled vertically "": 20 from the bottom up. The base 10 of the clutch 10 acts as a drive housing 16. The bottom of the drive housing 16 has a hinge hole 18 made toward the bottom 16: T of the housing. The housing 16 has a slot 20 which fits a spring support 22 near the front end of the housing 16. When mounted together, parts of the drive mechanism 24 are located within the drive mechanism * · *. in the microprocessor 16, as described below.

The lower connector housing 26 is secured to the drive mechanism housing 16 by four screws 28 extending through the holes 30 in the lower connector housing 26 and engaging the holes 32 in the drive mechanism 16. Three pairs of opposite fixed connectors 34 is mounted in the lower connector housing 26 in separate chambers 36. One of each of the opposed coupling pairs 34 is on the load side of the switch 10 and the other on the power line side. Each fixed connection 34 has a lug 38 which extends vertically when the fixed connection 34 is mounted in the chamber 36 of the lower terminal housing 26. The cable clamps 40 are used to secure the wires to the fixed connections 34.

6 106821

The connector bracket 42 is disposed in the shaft groove 44 of the lower connector housing 26. As shown in Figure 2B, the shaft groove consists of two axial walls 45. Each of the axial walls 45 is also the innermost wall of the three associated chambers 36 of the lower housing housing 26. connector bracket 42. The axial walls 45 of the shaft groove 44 also serve as a lateral support for the connector bracket 42. The length of the shaft groove 44 is approximately one-half the length of the axial length of the chambers 36 than the length of the connector rack 42. The terminal bracket 42 is thus able to slide in the shaft groove 44.

The terminal bracket 42 has three pairs of movable terminals 46. The movable terminals 46 are vertically oriented so that they engage the vertical lugs 38 of the fixed terminals 34 when the terminal bracket 42 is flagged in the "on" position and detaches from the lugs 38 in the "off" position.

As shown in Fig. 31, the connector springs 206 attach the movable connectors 46 to the connector bracket 42. When the movable connectors 46 engage the straight lugs of the fixed connectors 34, each movable pair of connectors 46 protrudes against the spring tensioning force. This ensures proper electrical contact.

As shown in Figures 2A and 2B, the top connector housing 48 is mounted over the top of the bottom connector housing 26 by four screws 50 extending through the holes 52 in the top connector housing 48 and engaging the holes 54 in the bottom connector housing 26. The top connector housing 48 has four screw caps 56 screws 28 for attaching the actuator housing 26 to the actuator housing 16 • · The screw caps 56 hold the screws 28 without impact: and inadvertently unlocked.

* ·. . The three pairs of holes 58 in the upper housing 48 provide access to the screws of the cable clamps 40 by means of a screwdriver.

The upper surface of the top connector housing 48 has an axial ridge 59 to which the connector bracket * · *. the axial groove 63 of the nose 42 fits (Fig. 31). Between ridge 59 and groove 63 ·· ·. the interaction stabilizes the terminal bracket 42 while allowing the terminal bracket 42 to move * · 'axially.

The co-operation between the ridge 59 and the groove 63 further functions to close the free passageways 30 between the opposing fixed connections 34 within the sub-housing 26, when the switch 10 is in the "uncoupled" position . The support 226 in the bottom connector housing 26 also helps to close the free buses when the connector carrier 42 is in the "uncoupled" position because the connector carrier 42 in the "uncoupled" position leans against the support 226.

7 106821

As shown in Fig. 31, connector bracket 42 has horizontal indentations 229 on its top and bottom surfaces. The recesses 229 are separated by horizontal ribs 228 having the same height as the upper and lower surfaces of the connector bracket 42. As again shown in Fig. 2B, the recesses 229 in the connector holder 42 have a width 5 that is smaller than the width 227 of the walls of the lower connector housing 26. In this way, each chamber 36 of the bottom connector housing is closed off from the adjacent chamber 36.

The conductive device 60 is mounted on the top of the top connector housing 48. As shown in Fig. 2A, the conductive device may be either a short circuit 64 or a fuse holder 66. When the conductive device 60 is mounted on the top connector housing 48, the conductive device 60 will cover the screw holes 52 in the top member 10 mesh housing 48, thereby preventing accidental rotation of screws 50.

The conductive device 60 has three pairs of opposite terminals 61 (see Figures 4 and 5), with one pair of each pair facing the load side of the switch and the other terminal of each pair facing the power cord. The terminals of the conductive device 60 extend vertically downwardly through the openings 62 of the upper connector housing 48 when the conductive device 60 is installed. Each connector 61 is in approximately the same vertical direction as the corresponding lug 38 of the fixed connector 34. As shown in Fig. 4, the terminal bracket 42 is in the "engaged" position 46 with the terminals 61 in the conductive device 60 attached to the upper portion of the movable terminals 46 and the lugs 38 of the fixed terminals 34 secured to the lower portion of the movable terminals ... 20 46. When the movable terminals 46 engage the terminals of the conductive device 60; 61 and 38 of the fixed connections 34, the connector springs 206 ensure the correct one

Iti '; electrical contact, as described above.

II: When sliding the terminal bracket 42 to the "on" position, the electrical current is transferred by the cable clamps 40 from the wire attached to the fixed connection 34 to the lugs on the fixed connection 34, the movable terminal 46 and through the respective connector in the conductive device 60.

The electric current then passes through the conductive device 60 to the load-side connector of the conductive device 60, to the corresponding movable connector 46, to the associated fixed-connection substitute 38, and finally to the load-side conductor.

If the conductive device 60 is a short-circuit 64, electricity flows directly from the wire-side terminal 30 to the load-side terminal 61 through a piece of metal.

. * In the preferred embodiment, each pair of terminals 61 and conductive short-circuit v. · Between the terminals 61 are made of a single piece of conductive metal.

: [[: As shown in Figure 4, if the conductive device 60 is a fuse holder 66, electricity must flow through the fuse to be able to move from the wire-side connector 61 to the load-side connector 61.

8 106821

As shown in Figure 5, the terminal bracket 42 is in the "disconnected" position. When the terminal bracket 42 is slid into the "disconnected" position, the movable terminals 46 do not touch the fixed terminals 34 or the terminals 61 in the conductive device 60. Therefore, electricity cannot move from the wire terminal to the load side terminal when terminal terminal 42 5 is "disconnected". position.

Further, according to Fig. 5, the connector holder 42 has a protrusion 70 which fits into the opening 72 in the tensile molding 74. The terminal bracket 42 slides between the "engaged" and "uncoupled" positions while the rest of the drive mechanism 24 slides the tongue 74 back and forth.

6, as shown in Fig. 6, the slider 74 slides toward the "engaged" position with the tongue 76 rotating clockwise, as shown in Figs. 6 and 7. Draw gear 74 is connected to draw gear 76 by a rivet 78 which can be slid in cam 76 in the transmission slit 80. The cam gear slit 80 is designed such that the slide 76 does not move when the cam 76 is rotated for the first 4 degrees clockwise. The tumbler 74 then slides 15 thereafter suddenly following the torsion 76 rotation by 50 degrees. The cam transmission slit 80 is shaped such that the tongue 74 moves relative to the rotation of the tongue 76 when the tongue 76 is rotated in either direction. Therefore, the movable terminals 46 engage abruptly in the "engaged" position with the clockwise rotation of the puller 76 and disengage in the "disengaged" position with the rotary drive 76 20 rotating at a constant speed.

• ·

The tongue 76 receives its rotary drive from the protrusion of the spring compression arm 86, which presses against the tongue 76 through the cam tongue 82. Spring Clamping Lever 84 • »•; | fits into cam spout 82, leaving significant space in circumferential direction. The spring clamping lever 86 must therefore rotate a predetermined distance before the protrusion 84. · ': · [25 presses against the cam 76.

• · ·

As shown in Fig. 7, the drive mechanism 24 is shown in the "off" position and the ghost drive mechanism 86 'in the "off" position. Since the drive mechanism 24 · * ”: functions to transfer lost movement across the center, the drive mechanism 24 can only remain in the fully“ on ”or fully“ off ”position.

The means for transitioning the center according to this embodiment are described. 'Below. Moving over the center generally refers to such means of displacement, v *: in which the spring or the like force forces the switch to either a fully "engaged" position or:: to a fully "uncoupled" position when the switch is moved past a moving center.

In this embodiment, a plurality of lost motion means are used, which are illustrated below. Generally, lost means of movement refer to the interaction of the parts, whereby the parts of the coupling device move, with the other parts remaining stationary or nearly stationary. As described below, lost means of movement may be useful in facilitating the operation of mechanisms moving over the center.

As shown in Figure 8, the drive mechanism 24 comprises a plurality of parts including 5: a spring guide 88, a tension spring 90, a shaft pin 92 that secures the tension spring 90 to a spring guide 88, a spring compression lever 86, a handle return spring 94 , to which the rotary drive shaft (not shown) engages to turn the switch to the "on" and "off" positions.

The switch is shown in detail in Figures 11-13. The coupling 96 has a base 98 and a stepped edge 100, a cylindrical shaft 102 perpendicular to the base 98, and a block 104 and a projection 106 mounted on the base 98. The cylindrical shaft 102 extends above and below the base 98. The portion of the cylindrical shaft 102 extending below the base 98 is for mounting the coupling 96 in the hinge hole 18 of the drive housing 16 (see Figure 2B). As will be explained below, the spring compression lever 86 and the tongue 76 are mounted parallel to the shaft 96 and supported by a bearing on the portion of the cylindrical shaft 102 above the base 98 of the coupler 96 and the upper end of the shaft 102 supported by an opening 103 in the socket housing 26. . 11, the cylindrical shaft 102 of the clutch 96 has an axial, second opening 108 of the rectangle ήπιοί *, which accommodates the drive shaft (not shown) to rotate the clutch 10 to the "on" and "off" positions. Near the base 98 of the coupling 96, the cylindrical * .v shaft 102 has a horizontal aperture 110 that fits a hook pin (not shown) for mounting the *: '': drive shaft axially to the aperture 108.

• · • · · • ··. ·: ·! As shown in Figures 14-16, the spring clamping lever 86 has a cylindrical opening 112 for mounting the lever 86 in the clutch 96. The protrusion 84 of the spring clamping lever 86 extends ... from the upper surface of the lever 86 and pulls the pulling cam 76 for both clockwise and anticlockwise rotation. ·· * everywhere. The spring clamping lever 86 has a bearing housing 114 for fitting the shaft pin 116 to the spring guide 88 (see Figures 17 and 18). The bearing housing 114 extends radially 30 from the peripheral surface 120 of the spring compression lever 86 so as to leave sufficient clearance to the spring guide 88 during rotation. The opening 115 of the bearing housing 114 is generally shaped to accommodate a cylindrical shaft pin of the spring guide 88 • The bearing housing 114 has a support 122 which is close to the circumferential surface of the lever 86 and extends to a lower surface 121. The bearing 122 supports a pressure having a shaft pin 116 of the spring guide 88 aligned along the center line of the spring guide 88.

10 106821

As shown in Figure 16, the bottom of the spring compression lever 86 has a chamber 124 disposed between the axial opening 112 in the lever 86 and the surface 120 of the lever 86. The spring clamping lever 96 also has an internal slit 126 which extends around the axial opening 112 near the outer periphery of the lever 86, except on the side of the lever 86 on which the surface 120 is located. The inner slot 126 is a narrow channel on the right side 130 of the spring compression lever 86 and continues as a narrow channel on the left side of the lever 86 128. As the internal slot 126 extends along the left side 128 of the lever 86 it expands to form a generally V-shaped void. A notch 86 of the spring compression lever wall 132 to reveal the internal slit 128 at the start 126 of the spring compression lever 86 of the left side 10. Referring again to FIG. 8, we can see that the handle return spring 94 is disposed within the internal slot 126. A portion of the handle return spring 94 is visible through the notch 132.

As shown in Figs. 17-20, the spring guide 88 is generally a rod with a slot 136 passing through the tip end, a cylindrical shaft pin 116 at the base end and at right angles to the axis 15 of the spring guide 88, the rear support 138 located between the slot 136 and the pin 116. , which rests on the shaft pin 116 and extends perpendicularly outwardly from the shaft pin 116.

The support 142 is located between the pivot pin and the rear support 138. The support 142 provides additional strength to both the spindle pin 116 and the rear support 138. The support 142 also allows proper alignment of the support surface 114 of the spring 20 guide 88 and the spring compression lever 86. The height of the support 142 * '·, is the distance 144 (Fig. 15) of the support part 114 of the support surface 114 of the spring pressing lever 86; / 122 between the lower surface and the lower surface 146 of the tip 146 of the bearing surface 114. With this construction, the support · · · 142 rests on the tip 146 of the support surface 114 while the projection 140 rests on the support portion 122 of the support surface 114 ’: thus facilitating correct alignment.

The projection 140 extends around the spindle pin 116 and away from the spring guide 88.

As shown in Figure 10, the protrusion 140 of the spring guide 88 fits on the lower surface of the support portion 122 of the support surface 114 of the spring compression lever ... 86 and the stepped edge 100 ;;; between the step 148 when the spring clamping lever 86 is mounted on the coupling 96 with the shaft pin 116 in the support member 114.

As shown in Fig. 9, which is a sectional view of the spring compression lever 86 mounted on the clutch 96, the support block 104 on the clutch 96 is the »v ,; The protrusion 106 in the chamber 86 and over the clutch 96 is located in the notch 132 of the spring compression lever 86. As the drive shaft rotates the clutch 96 clockwise, the support 104 moves across the chamber 124 and the arm 106 compresses the handle return spring 94. The dimensions of the portions of the clutch 96 and the spring clamping lever 86 are such that the bracket 104 is pushed against the wall of the chamber 124 before the return spring 134 of the handle reaches the inner wall of the internal groove 126. With this design, the support 104 receives virtually all of the stress exerted on the clutch 96 when the clutch 96 rotates the spring clamping lever 86. The projection 106 of the clutch 96 does not push against the spring clamping lever 5 but merely compresses the handle to the return spring 94.

As shown in Figures 7, 21 and 22, the spring support 22 is mounted in the actuator housing 16. The spring support is made of tear metal plate. The spring support 22 has a vertical surface and a horizontal surface. On the vertical surface of the spring support 22, the spring support has a vertical depression 156 for the shaft pin 92. The interaction between the depression 156 and the pin 10 of the shaft 10 acts as a hinge on which the spring guide 88 is able to pivot about the pin 92. As shown in Figure 7, when the spring compression lever 86 is rotated clockwise, the spring guide 88 protrudes through the opening 157 (Fig. 22) in the spring support 22 against the pressure of the tension spring 90. As the spring guide 88 protrudes through the opening 157 of the spring support 22 and rotates, the tension spring 90 is compressed between the shaft pin 92 and the rear 138 of the spring guide 88. As soon as the spring guide 88 rotates a few degrees past the center, the tension spring 90 protrudes against the rear support 138 of the spring guide 88 and drives the entire drive mechanism 24 to a fully "on" or "off" position. Such a switching operation is referred to in the art as a switchover.

... 20 In order to prevent the user from holding the switch in the center of rotation and in a position which is not fully "engaged" or "uncoupled", the switch 10 is provided with two mechanisms of lost movement. One of these mechanisms relates to the handle return spring v 94. As described above, the projection 106 of the clutch 96 compresses the handle return spring 94 when the clutch 96 is rotated clockwise to rotate the lever 86. As soon as the spring guide 88 passes the center of rotation, the support 96 of the clutch 96: T is released and the return spring 94 of the handle extends to push the spring clamping lever 86 to align with the clutch 96. This is how the spring clamping lever. **. 86 is rotated from the position just past the center of rotation to position 17 · ♦ *, degrees past the center. As the tension spring 90 is disengaged while the return spring 94 of the handle 30 applies the spring compression lever 86 to the clutch 96, the speed of the entire drive mechanism 24 increases, making it difficult for the user to keep the clutch in a partially "engaged" position.

«· ·

When the drive mechanism is rotated to the "disengaged" position, by rotating it counterclockwise, the loss of movement 35 caused by the cooperation between the support block 104 and the chamber 124 works again to prevent the user from holding the switch in the partially "disengaged" position. in the same way. As the clutch 96 is rotated counterclockwise, the a 106821 spring clamping lever 86 remains aligned with the clutch 96. The Km spring guide 88 overrides the center of rotation, the tension spring 90 drives the spring compression lever 86 ahead of the switch 96 (against the pressure of the handle return spring 94), again making it difficult for the user to keep the switch in a partially "engaged" position.

Referring again to Fig. 6, another significant lost movement means is associated with cam transmission slit 80. As the spring clamping lever 86 is rotated clockwise and pushed against cam 76 through cam cam 82, cam 76 begins to rotate a few degrees without dissolving slider 74 as radius 83 begins be constant. As the cam rotates farther, the drive skid 74 suddenly moves to the "engaged" position due to the rapid increase in the radius of the cam surface of the slot 82. When the drive cam 76 is rotated counterclockwise to obtain the clutch disengaged, the cam drive gear 80 has no similar lost movement mechanism. Rather, the radius of the cam surface 83 increases steadily at a constant rate.The shape of the cam force transfer slot 80 therefore promotes the sudden closure of the coupling and the gradual opening of the coupling 10 15.

As again shown in Figures 21 and 22, the spring support 22 also acts as a bearing shaft for the auxiliary cam 158. Auxiliary cam 158 engages through slit 160 in the traction sheave 74.

The actuator 162 of the auxiliary switch 12 may be pulled by the auxiliary cam 158 using cam transmission. As shown in particular in Figures 23-25, the auxiliary cam 158 is generally wedge-shaped in shape and has a cam groove 164 on an outer cylindrical surface 166. The auxiliary cam 158; is the upper point 168, which is pivotally connected to the spring support 22 and the lower point 170, • «·; / which is pivotally connected to the actuator housing 16 for mounting the cam to the '· * · * points 168 and 170 about a vertical axis of rotation. The cam protrusion 172 'is located on the upper surface of the cam 158, which extends circumferentially beyond the lower surface of the cam. When the coupling 10 is assembled, the cam protrusion 172 is inserted into the tongue slide::: 74 into the elongated opening 160 (Fig. 6). When the switch 10 is rotated to the "on" position, the tongue 74 moves the connector bracket 42 to the "on" position but rotates the auxiliary cam 158 through the cam protrusion 172 such that the auxiliary switch 12 • 41 ···, the actuator 162 lowers lower as the auxiliary cam 158 rotates.As] · * 30 in Fig. 2B, the traction sheave opening 160 is not circular, but rather elongated so that the cam protrusion 172 can move sideways with respect to the aperture 160, ';' ': pushes cam cam 172 mainly toward the tip of coupling 10.

. . ·. The shape of the aperture 160 is necessary because the cam protrusion 172 does not move in a linear fashion, 1, but rather a cabbage track. According to Figure 21, the spring support 22 has an opening 35,176 for a cam clearance 72 to provide a wide clearance as it moves.

is 106821

As shown in Figure 22, the auxiliary cam 158 is hollow (see Ref. 179). The auxiliary cam 158 must necessarily be hollow because the spring guide 88 will travel back and forth to the space 179 within the auxiliary cam 158 when the switch 10 is opened and closed.

As shown in Figures 1 and 26-29, the auxiliary switch 12 can be mounted to the switch 10 using the auxiliary switch mounting bracket 14. As shown in Figure 1, the auxiliary switch mounting bracket 14 has two legs 178 extending horizontally out of the bracket 180 of the bracket 14. Each leg 178 fits a similarly shaped horizontal opening 182 on the side of the drive housing 16 (Figures 1, 2A and 2B). The bridge 180 of the auxiliary switch mounting bracket 14 is in a horizontal plane that is lower than the legs 178. The bracket 14 also has two mounting pieces 196 for securing the auxiliary switch 12 to the bracket 14. Each bracket 196 is aligned with a corresponding leg 178 located above the bridge 180. Walls 184 extend between bridge 180 and anchoring piece 196. The auxiliary switch 12 is supported on the bridge 180 and the walls 184 and threaded onto the rack 14 through the holes 186 of the screw 15 in the mounting block 196, as shown in Figures 27 and 29. The rack 14 may be made with metal threaded inserts housed in the screw holes 186 where the screws securing the auxiliary switch 12 to the rack 14 are located.

For attaching the rack 14 to the electrical switch 10, the auxiliary switch mounting bracket l1 has two clips 188, one of which is located outside each leg 178, 20 in the rack 14. As shown in Figure 27, the clamps are parallel to the legs 178 and space 189 is between each clamp and the respective foot. The space 189 allows the '·' · * clamp to be pressed toward the foot 178. Each clamp 188 has a latch 190 at its end.

Referring again to Fig. 1, it is shown that when the rack 14 is mounted on the coupling 10 'J' and the legs 178 are mounted on the horizontal openings 182, the clamps 188 move into the openings 192 of the clamps : shown) in the clamp openings 192. To release the rack 14 from the switch 10, the clamps 188 are pressed to release the latches 190. As soon as the rack 14 is mounted on the coupling. · ♦ ·. 10, the auxiliary switch can be mounted on the rack 14.

• · · • j ·

Referring again to Figures 26-29, which show that each clip also has a tip 1944. Each tip 194 extends away and inward from the main body of the clip 188 at a level above the mounting block 196. With this design, the clamps 188 can be · clamped when the auxiliary switch 12 is not secured to the rack 14, but the clamps 188 cannot be inwardly clamped when the auxiliary switch 12 is attached to the rack 14, therefore, the pawls 190 of the clamps 35 188 remain attached to the clamp openings 192 even though the switch is shaken violently.

14 106821

As shown in Figures 30 and 31, the lower connector housing 26 has a frame 198 disposed near the drive shaft (not shown), to which the "coupled" detector 200 fits. The terminal bracket 42 has a cover 202 as an extension of the primary plane of the terminal bracket. An "uncoupled" detector 204 is disposed on the upper surface of the cover 202. When the terminal bracket 42 is in the "uncoupled" position, the cover 202 covers the "on" detector 200 located in the frame 198. When the terminal bracket moves to the "on" the detector 200 appears to the user and the "disconnected" belt 204 is hidden under the top connector housing 48. With this design, the user of the switch is less likely to be unaware of the "on" or "off" position of the switch 10, because the user is only able to see the "off" or "off" indicator at any one time. In addition, this indicator is less likely to fail because the cover 202 is integral with the connector bracket 42.

Figures 32-37 generally refer to alternate portions of the switch 10 that may be used to ensure that the top terminal housing 48 and the bottom terminal housing 26 are securely attached to terminal block 42, even in the case of high electrical load. Under high electrical load, the upper terminal box 48 and the lower terminal box 26 may tend to curve apart. The curvature may lead to the appearance of a free space between the opposite fixed terminals 34 of one phase or between the fixed terminals 34 of the various phases. It is possible that as the clearance 20 appears, arcing sparks may occur between the fixed connections 34. As is particularly evident from FIG. 32, curvature can be prevented by using screws 208 to secure the middle portion of the top connector housing 48 'to the center portion of the bottom connector housing 26'. 32 · · · '; The upper connector housing 48 'corresponds to the upper connector housing 48 identified for the first time in Fig. 2A, except that it has the modifications described herein intended to prevent the occurrence of curvature. Likewise, the bottom connector housing 26 '• ·: * ··· of Fig. 32 and the connector holder 42 ’shown in Fig. 32 correspond to the bottom connector housing 26 and connector member 42,: V: shown for the first time in Fig. 2B.

... as shown in Fig. 33, the terminal bracket 42 'of the alternative embodiment is generally the same as the terminal bracket 42 shown for the first time in Fig. 2B except that the bracket 42' has two longitudinal openings 218 near its center. Connector: ***: The rack 42 'also has two additional surface ridges 220 extending longitudinally along the connector rack 42' and each ridge 220 being longitudinal *. adjacent the outer edge of the opening 218.

As shown in Figure 34, the structure of the bottom connector housing 26 'is generally the same 35 as the connector holder 26 shown for the first time in Figure 2B, except that it has two screw bases 216 for screws 208. The screw base 216 extends upwardly from the bottom 215 of the bottom connector housing 106821 to a height slightly above the upper surface of the connector bracket 42 'when properly positioned in the axial groove 44 and fitting within the longitudinal holes 218 of the connector bracket 42'. The longitudinal openings 218 are longer than the screw carriers 216, which allows the connector carrier 42 'to move 5 in a longitudinal direction with an axial groove 44. Since the screw carriers 216 extend to a height slightly above the upper surface of the connector carrier 42', the connector carrier 42 'is allowed to slip - by 48 'and 26' by the extension box.

Fig. 36 is a cross-sectional view of the upper 48 'and the lower connector housing 26' assembled around the connector bracket 42 'according to line 36-36 of Fig. 32. Figure 36 clearly shows that the screws 208 fasten the top connector housing 48 'to end screw terminals 216 of the bottom connector housing 26' and prevent the upper 48 'and the bottom connector housing 26' from curving apart.

As shown in Fig. 37, the insulating wall pair 217 of the lower connector housing 26 'and the insulating wall pair 212 of the upper connector housing 48' operate in connection with the surface ridge 220 of the connector holder 42 '. The free space 221 of the longitudinal holes 218 is formed by the holes 218 being larger than the screw bases 216. The lower insulating walls 217 extend upwards from the bottom 215 of the bottom housing 26 'to the lower surface of the connector bracket 42' when the connector 20 is positioned in the axial groove 44. extending longitudinally across the chamber of the corresponding lower connector housing 26 '(see Figure 34). As shown in Figure 35, each of the two top insulating walls 212 is similarly made in the top connector housing 48 '. In other words, each of the two upper insulation walls 212 extends downward from the canopy 251 of the top connector housing 48 'to the same position as the top surface of the connector holder 42' when the connector holder 42 'is • ♦ · I ..' disposed in the axial groove 44 framework. The top insulating walls 212 also extend longitudinally in the respective chamber 37 of the top connector housing 48 '. Again, each insulating wall 217 is aligned vertically with the corresponding top ridge 220 of the connector bracket 42' and the corresponding top member 2 of the top connector housing 48 '. These three portions form an effective barrier between the lower space 26 ': *** and the upper connector housing 48' between the chambers 36 and 37 and the screw bases 216. Depending on the size of the longitudinal holes 218 of the connector bracket 42 ', it may also be necessary to include casting plugs 222 (see Figure 34) and 224' ·· 1 (see Figure 35) to prevent clearance between the outer chambers 36 and 37 and 35 screw platforms 216. The plugs 222 of the lower connector housing 26 'should be as high 106821 as the lower insulating walls 217 and the upper connector housing 48' should extend downward to the same location as the upper insulating walls 212.

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Claims (14)

An electrical switch, characterized in that it comprises: a drive housing (16); a lower connector housing (26; 26 ') mounted vertically on the drive mechanism housing 5 by a first securing means (28); a pair of fixed connectors (34) disposed within the lower connector housing and each having a tab (38) extending upwardly in a vertical axial plane; an upper connector housing (48; 48 ') secured in a vertical position on the lower connector housing by a second mounting means (50; 208); A conductive device (60) mounted vertically on the top connector housing by a third securing device (67), the conductive device including a pair of lugs (61) extending downwardly in said vertical axial plane through the top of the upper connector housing; an axially movable connector holder between the lower (42; 42 ') and the upper connector housing; 15 pairs of movable terminals (46) mounted vertically on the terminal bracket (42; 42 ') to engage the fixed connections (34) and lugs (61) of the conductive device (60) • ... · in said vertical axial plane; ja «· • · · •« ·! . 'Drive mechanism (24) in the drive mechanism housing to axially flag • «« *'. a movable connector bracket (42; 42 ') in the axial direction, whereby the movable connectors are attached to and detached from the fixed connection lugs of the lower connector housings and the conductive device lugs in the upper connector housing. I «I • · · Electrical switch according to Claim 1, characterized in that the electric switch. the fastening device (28) is covered by the top connector housing (48) and the second fastening device (50). * ··. covered by a conductive device (60). The electrical switch according to claim 1 or 2, characterized in that the conductive (tl ....: device comprises a fuse holder (66).:: *: The electrical switch according to claim 1 or 2, characterized in that the conductive: '': the device comprises a short circuit (64) .18 106821 Electrical switch according to one of the preceding claims, characterized in that the drive mechanism housing (16) has a tip surface with an opening; and further comprising 5 auxiliary cam (158) having a cam groove (164), said auxiliary cam being rotatably mounted! a drive mechanism housing (16) with the cam groove open through an opening in the tip surface of the drive mechanism housing; and means (74; 172) for rotating said auxiliary cam. Electrical switch according to Claim 5, characterized in that a starter (162) is provided for the auxiliary switch (12) in the ground of the cam 10. Electrical switch according to Claim 5 or 6, characterized in that the means for rotating the auxiliary cam (76) include: a protrusion (172) on the upper surface of the auxiliary cam; and a means (74) in the drive mechanism for engaging the protrusion (172) so that the auxiliary cam 15 rotates as the terminal rack moves axially. ···. Electrical switch according to one of the preceding claims, characterized in that:. ·. : that it also has a tool (227, 228, 229) for each of the lower and upper terminal box lugs! for electrically isolating the other lugs of the lower and upper connector housing. • «· An electrical switch according to any one of the preceding claims, characterized in that the second fastening means (50, 208) comprises a first screw (50) securing the periphery of the upper and lower connector housing and a second screw (208) securing the upper and lower connector housing from the screw inwards · · · · · · · · · · · · · · · · · ·. • «• · · · · · Electrical switch according to one of the preceding claims, characterized in: ***: 25 that the «4« socket housing (26 ') comprises: I <»bottom (215), cushion (216), the cushion extending from the bottom (25) upwards to a height above the top surface of the connector housing (42 ') and a lower longitudinal insulating wall (217) extending upwardly from the bottom to the underside of the connector holder; The upper connector housing (48 ') comprising: a ceiling (211) having a screw hole (210) and an upper longitudinal insulating wall (212) extending downward from the ceiling of the upper connector housing to the upper end of the connector holder; the connector bracket comprising: 10 longitudinal holes (218) for the cushion, the hole long enough to permit axial displacement of the connector bracket so that movable connectors can engage and disengage (and elongate) the lugs of the lower connector housing and the conductive device in the upper connector housing; positioned near the outside of the longitudinal hole, the longitudinal ridge being aligned with the upper and lower longitudinal insulating walls, thereby providing a longitudinal barrier to the longitudinal hole; and the second attachment means has a screw (208), the screw rotating in the top connector housing:. j through the screw hole in the cushion of the bottom connector housing. Electrical switch according to one of the preceding claims, characterized in that: *. * 20 comprising: • T: a switch state indicator (200) disposed in the bottom connector housing (26) such that it is exposed when the movable terminals are in a state relative to the fixed terminals; and ··· «· a cover (202) supported by the connector holder (42) so as to cover the indicator ♦ ·· * when the movable connectors are in a state opposite to the lugs (38) of the fixed connectors (34). I «< An electrical switch according to claim 11, characterized in that it further comprises: a switch state indicator (204) disposed on the cover (202) to correspond to said opposite state such that the mirror indicator is in display mode when the movable terminals (46) are replacements (38) for fixed connectors 20 and are hidden when the movable connectors are in said corresponding state relative to the fixed connectors. An electrical switch according to any one of the preceding claims, comprising an auxiliary switch mounting bracket (14), characterized in that it comprises: 5 bridges (180) connecting the bracket to support the auxiliary switch above the bridge; means (196) for attaching an auxiliary switch to the bridge; a shaft (178) extending horizontally from the bridge to support the mounting bracket to the electrical switch; a clamp (188) having a latch (190) extending outwardly to secure the mounting bracket 10 to the electrical switch; and a tip (194) in the clamp located above the bridge plane and extending inwardly so that the auxiliary auxiliary switch contacts the tip as it moves inward, thereby preventing the clamp from loosening. Electrical switch according to one of the preceding claims, characterized in that it comprises: a) a drive mechanism housing (16); •, b) a spring support (22) mounted in the drive housing; : * ·: C) a pin (92) for supporting the spring in the bracket vertically; : Y: d) tension spring; .... (e) a spring guide (88) inserted through a tension spring, which includes:. : 1) a slot (136) through the tip of the spring guide to which the sliding pin fits; ··. · '2) means (138) for supporting the tension spring against the pin; m · · 3. a pin (116) perpendicular to the cylindrical axis of the spring guide; and ... 4) a lip (140) extending perpendicularly away from the shaft pin; F) a coupling joint (96) supported by a drive housing, comprising: .. · * 1) a base (98) having a stepped edge (100) which engages the lip of a spring guide; • · · ....: 2) means for mounting the coupling to rotate about the drive shaft; 3) a cushion (104), and '; 4) a protrusion (106); :: g) a handle return spring (94); h) a spring compression lever (86) having: 2i 106821 first protrusion (34); A bearing (114) for receiving a spring pin bearing pin and having a support member (122); A chamber (124) for receiving a cushion on the coupling, the chamber 5 being substantially wider than the cushion; An internal slot (126) having an enlarged portion for receiving the return spring of the handle; and 5. a notch (132) on the side of the spring compression lever revealing an expanded portion of the slot; 10 spring compression with the lever mounted coaxially with the cylindrical axis of the clutch to rotate about the drive shaft such that the notch hits the protrusion of the clutch when the return spring of the handle is loaded against the protrusion, the cushion rotating the drive-15 axis causes the spring compression lever to rotate in a wasteful movement and over center operation; i) a torsion cam (76) having a slot for the spring compression arm raised, the tongue being supported by the spring compression arm and mounted coaxially with the cylindrical shaft pin of the coupling, whereby the rotational movement of the protrusion causes the tongue to rotate; and j) a linearly soluble tension slide (74) for transmitting the sliding movement of the chalk; to the rack, the drawbar being connected to the coupling stand and separately connected to the drawbar by a cam transmission, whereby the rotational movement of the drawbar involves a linear movement of the drawbar. • «·« « 25 Patentkrav ♦ · • · · ···